difference between affectation
and affection

1. The interest he showed was not genuine. It was only an affectation.
2. Your affectation towards your sister will be revealed one day.

affection : ( Noun )

MEANING :

amity
fondness

EXAMPLE SENTENCES :

1. He couldn’t win her affection.
2. Their affection for me has changed my heart completely.
3. She will not get affected by his affection.
4. The judge will not let his affection for his son affect his judgment.